Image display apparatus

ABSTRACT

An image display apparatus includes an audio output unit; a rollable display; a driving unit configured to change a size of the rollable display; an interface configured to receive a signal from a mobile terminal; and a controller configured to control the driving unit to unroll the rollable display in response to connecting with the mobile terminal.

CROSS-REFERENCE TO RELATED APPLICATIONS

This Application is a Continuation of co-pending U.S. patent applicationSer. No. 16/111,595 filed on Aug. 24, 2018, which claims the prioritybenefit under 35 U.S.C. § 119(a) to Korean Patent Application No.10-2017-0108093 filed in the Republic of Korea on Aug. 25, 2017, all ofwhich are hereby expressly incorporated by reference into the presentapplication.

BACKGROUND OF THE INVENTION 1. Field of the Invention

The present invention relates to an image display apparatus, and moreparticularly, to an image display apparatus which can display a video inadvance on a remote controller while a rollable display is unrolledupward.

2. Discussion of the Related Art

An image display apparatus can output images by using various methods,including a method of outputting images using a display panel or amethod of externally projecting images using visible light. As the imagedisplay apparatus becomes larger in size and high quality, a display isalso increased in size.

However, as the display size becomes larger, power consumption isincreased, and when the image display apparatus is not used, the largesize of the display is undesirable from an aesthetic point of view.Thus, there is research on an image display apparatus in which the sizeof the display is variable.

SUMMARY OF THE INVENTION

It is an object of the present invention to provide an image displayapparatus which can display a video in advance on a remote controllerwhile a rollable display is unrolled upward.

In accordance with an aspect of the present invention, the above andother objects can be accomplished by the provision of an image displayapparatus including a rollable display, a driving unit to change a sizeof the rollable display, an interface to receive a signal from a remotecontroller, and a controller to control the rollable display, whereinbased on an image display input, the controller controls the drivingunit to unroll the rollable display, and during the unrolling, thecontroller controls a first video, corresponding to a video to bedisplayed on the rollable display, to be displayed on a display of theremote controller.

In accordance with another aspect of the present invention, the aboveand other objects can be accomplished by the provision of an imagedisplay apparatus including a rollable display, a driving unit to changea size of the rollable display, an interface to receive a signal from aremote controller, and a controller to control the rollable display,wherein based on an image display input, the controller controls thedriving unit to unroll the rollable display, and during the unrolling,the controller controls a video not to be displayed on the display, andcontrols a first video, corresponding to a video to be displayed on thedisplay, to be displayed on the display of the remote controller.

Further scope of applicability of the present invention will becomeapparent from the detailed description given hereinafter. However, thedetailed description and specific examples, while indicating preferredembodiments of the invention, are given by illustration only, sincevarious changes and modifications within the spirit and scope of theinvention will become apparent to those skilled in the art from thisdetailed description.

BRIEF DESCRIPTION OF THE DRAWINGS

The present invention will become more fully understood from thedetailed description given hereinbelow and the accompanying drawings,which are given by illustration only, and thus are not limitative of thepresent invention, and wherein:

FIGS. 1A to 1D are diagrams illustrating an image display apparatusincluding a rollable display according to an embodiment of the presentinvention.

FIG. 2 is an internal block diagram of the image display apparatus ofFIGS. 1A to 1D.

FIG. 3 is an internal block diagram of a controller of FIG. 2.

FIG. 4 is a diagram illustrating a method of controlling a remotecontroller of FIG. 2.

FIG. 5 is an internal block diagram of a remote controller of FIG. 2.

FIG. 6 is a flowchart illustrating a method of operating an imagedisplay apparatus including a rollable display according to anembodiment of the present invention.

FIGS. 7A to 15C are diagrams referred to in explaining the operationmethod of FIG. 6.

DETAILED DESCRIPTION OF THE EMBODIMENTS

Hereinafter, the present invention will be described in further detailwith reference to the accompanying drawings. In the followingdescription of the present invention, the suffixes “module” and “unit”that are mentioned in the elements used to describe the presentinvention are merely used for the purpose of simplifying the descriptionof the present invention, and thus the suffix itself is not assigned aparticularly significant meaning or function. Therefore, the suffixes“module” and “unit” may also be alternately used to refer to a specificelement of the present invention.

FIGS. 1A to 1D are diagrams illustrating an image display apparatusincluding a rollable display according to an embodiment of the presentinvention. Referring to FIGS. 1A to 1D, the image display apparatus 100according to the embodiment of the present invention includes a display180 and a signal processor 300.

The signal processor 300 includes an opening 15, through which therollable display 180 can be unrolled upward to display a video. Thus,the signal processor 300 may include a driving unit (175 in FIG. 2)which drives the rollable display 180. The driving unit 175 may includea roller, on which the rollable display 180 is rolled, and a motor whichrotates the roller.

In addition, FIG. 1A illustrates an example where the rollable display180 is rolled into the signal processor 300 so as not to be exposed tothe outside of the opening 15. In this instance, the signal processor300 is in a standby mode, such that only some of the units operate, andpower may not be supplied to the display 180.

FIG. 1B illustrates an example where the rollable display 180 isunrolled upward by the operation of the driving unit 175, such that therollable display 180 has a height of h1, and is exposed to the outsideof the opening 15. Also, FIG. 1C illustrates an example where therollable display 180 is unrolled upward by the operation of the drivingunit 175, such that the rollable display 180 has a height of h2. FIG. 1Dillustrates an example where the rollable display 180 is unrolled upwardby the operation of the driving unit 175, such that the rollable display180 has a height of h3.

The image display apparatus 100 according to an embodiment of thepresent invention includes a rollable display 180, a driving unit 175which changes the size of the rollable display 180, a user inputinterface 150 which receives a signal from a remote controller 200, anda controller 170 which controls the rollable display 180.

Further, the controller 170 controls the driving unit 175 to unroll therollable display 180 upward based on an image display input, andcontrols a first video, corresponding to a video to be displayed on therollable display 180, to be displayed on a display 280 of the remotecontroller 200 during the upward unrolling. Accordingly, the video canbe displayed in advance on the remote controller 200 while the rollabledisplay 180 is unrolled upward.

Once the rollable display 180 is fully unrolled, such that the rollabledisplay 180 is at the first height, a video to be displayed is displayedon the rollable display 180, thereby enabling a user to view the imageseamlessly through the rollable display 180.

The image display apparatus 100 according to another embodiment of thepresent invention includes a rollable display 180, a driving unit 175which changes the size of the rollable display 180, a user inputinterface 150 which receives a signal from a remote controller 200, anda controller 170 which controls the rollable display 180. The controller170 controls the driving unit 175 to unroll the rollable display 180upward based on an image display input, and during the upward unrolling,controls a video not to be displayed on the rollable display 180, and afirst video, corresponding to a video to be displayed on the rollabledisplay 180, to be displayed on a display 280 of the remote controller200. Thus, a video can be displayed in advance on the remote controller200 while the rollable display 180 is unrolled upward.

In addition, the rollable display 180 is a flexible display, and mayinclude an organic light-emitting diode (OLED) panel. The OLED panelincludes a plurality of scan lines and a plurality of data lines, andpixels each including sub-pixels may be defined at crossing regions ofthe scan lines and the data lines.

A pixel circuit of the OLED panel includes a switching transistor SW1, astorage capacitor Cst, a driving transistor SW2, and an OLED. Theswitching transistor SW1 is turned on in response to a scan signalVdscan input from the scan line connected to a gate terminal. When beingturned on, the switching transistor SW1 transmits an input data signalVdata is to a gate terminal of the driving transistor SW2, or to one endof the storage capacitor Cst.

The storage capacitor Cst is provided between the gate terminal and thesource terminal of the driving transistor SW2, and stores apredetermined difference between a level of a data signal, which istransmitted to one end of the storage capacitor Cst, and a level ofdirect current power (VDD) which is transmitted to the other end of thestorage capacitor Cst. For example, when data signals have differentlevels by a pulse amplitude modulation (PAM) method, a power levelstored in the storage capacitor Cst changes according to a leveldifference of the data signals (Vdata). In another example, when datasignals have different pulse widths by a pulse width modulation (PWM)method, a power level stored in the storage capacitor Cst changesaccording to a pulse width difference of the data signals (Vdata).

The driving transistor SW2 is turned on according to the power levelstored in the storage capacitor Cst. When the driving transistor SW2 isturned on, a driving current IOLED, which is proportional to the storedpower level, flows to the OLED layer, thereby enabling the OLED layer toperform a light-emitting operation.

The OLED layer includes an RGBW light-emitting layer (EML) correspondingto sub-pixels, and may include at least one of a hole injection layer(HIL), a hole transport layer (HTL), an electronic transport layer(ETL), and an electronic injection layer (EIL). In addition to theselayers, the OLED layer may further include a hole blocking layer and thelike.

All the sub-pixels output white light in the OLED layer, but in the caseof green, red, and blue sub-pixels, a color filter is providedseparately to display colors. That is, each of the green, red, and bluesub-pixels may further include a color filter, whereas the whitesub-pixels, which output white light, do not require any color filter.

The signal processor 300 may include a speaker unit 185 a which canoutput sound forward. In the drawings, each of speakers SFa and SFbincluded in the speaker unit 185 a is disposed on a front portion of thesignal processor 300. Accordingly, the sound output from the speakerunit 185 a is output toward a user and may reach the user.

The image display apparatus 100 of FIGS. 1A to 1D may be a monitor, aTV, a tablet PC, a mobile terminal, and the like. FIG. 2 is an internalblock diagram of the image display apparatus of FIGS. 1A to 1D.Referring to FIG. 2, the image display apparatus 100 according to anembodiment of the present invention includes a display 180 and a signalprocessor 300.

The signal processor 300 includes a tuner 110, a demodulator 120, anexternal device interface 130, a network interface 135, a memory 140, auser input interface 150, a sensor unit, a controller 170, an audiooutput unit 185, and a driving unit 175. Although FIG. 2 illustrates anexample where the tuner 110, the demodulator 120, the external deviceinterface 130, and the network interface 135 are included in a broadcastreceiver 105, various modifications thereof may be made.

The tuner 110 can also tune a Radio Frequency (RF) broadcast signalcorresponding to a channel selected by a user or all the previouslystored channels, among RF broadcast signals received via an antenna 50.Further, the tuned RF broadcast signal is converted into an intermediatefrequency signal or a baseband image, or an audio signal.

For example, if the selected RF broadcast signal is a digital broadcastsignal, the tuner 110 converts the digital broadcast signal into adigital IF signal (DIF), and if the selected RF broadcast signal is ananalog broadcast signal, the tuner 110 converts the analog broadcastsignal into a baseband image or a voice signal (CVBS/SIF). That is, thetuner 110 can process the digital broadcast signal or the analogbroadcast signal. The analog baseband image or the voice signal(CVBS/SIF), which is output from the tuner 110, may be directly input tothe controller 170.

The tuner 110 can also sequentially tune an RF broadcast signal of allthe broadcast channels stored using a channel memory function among theRF broadcast signals received via the antenna 50, and can convert the RFbroadcast signal into an intermediate frequency signal or a basebandvideo or audio signal. The tuner 110 may also include a plurality oftuners to receive broadcast signals of a plurality of channels.Alternatively, the tuner 110 may be a single turner which receivesbroadcast signals of a plurality of channels simultaneously.

In addition, the demodulator 120 can receive the digital IF (DIF) signalconverted by the tuner 110, and demodulate the digital IF signal. Thedemodulator 120 can output a stream signal (TS) after demodulation andchannel decoding. Here, the stream signal TS may be a signal in which avideo signal, an audio signal, and a data signal are multiplexed.

The stream signal output by the demodulator 120 can also be input to thecontroller 170. The controller 170 can perform demultiplexing, A/Vsignal processing, and the like, can output video to the display 180,and output audio to the audio output unit 185. Further, the externaldevice interface 130 may be connected to an external device 190 totransmit or receive data. Thus, the external device interface 130 mayinclude an A/V input/output unit or a wireless communication unit.

The external device interface 130 may also be connected, wirelessly orby wire, to an external device, such as a digital versatile disk (DVD),a Blu-ray, a game console, a camera, a camcorder, a computer (laptopcomputer), a set-top box, and the like, and can perform an input/outputoperation with respect to the external device. The A/V input/output unitcan receive input of image and audio signals of the external device.Further, a wireless communication unit can perform short-range wirelesscommunication with other electronic devices.

The network interface 135 serves as an interface for connecting theimage display apparatus 100 and a wired or wireless network such as theInternet. For example, the network interface 135 can receive contents ordata from the Internet, a content provider, or a network operator over anetwork.

The memory 140 may store programs for processing and controlling of eachsignal by the controller 170, or may store processed video, audio, ordata signals. In addition, the memory 140 may temporarily store video,audio, or data signals input via the external device interface 130.Further, the memory 130 may store information related to a predeterminedbroadcast channel using a channel memory function of a channel map andthe like.

FIG. 2 illustrates an example where the memory 140 is providedseparately from the controller 170, but the present invention is notlimited thereto, and the memory 140 may be included in the controller170. Further, the user input interface 150 can transmit a signal inputby a user to the controller 170 or can transmit a signal from thecontroller 170 to the user.

For example, the user input interface 150 can transmit/receive a userinput signal, such as a power on/off, a channel selection, a screensetting, and the like, from the remote controller 200, transfer a userinput signal, which is input from a local key, such as a power key, achannel key, a volume key, or a setting key, to the controller 170,transfer a user input signal, which is input from a sensor unit forsensing a user's gesture, to the controller 170, or transmit a signalfrom the controller 170 to the sensor unit.

The controller 170 can also demultiplex stream, which is input via thetuner 110, the demodulator 120, or the external interface unit 130, orprocess the demultiplexed signals, to generate and output signals foroutputting video or audio. In addition, the video signal processed bythe controller 170 may be input to the display 180 to be output as avideo corresponding to the video signal. Further, the video signalprocessed by the controller 170 may be input to an external outputdevice via the external device interface 130.

The audio signal processed by the controller 170 can be output to theaudio output unit 185, and the audio signal processed by the controller170 can be input to the external output device through the externaldevice interface 130. Further, the controller 170 may include ademultiplexer, a video processor, and the like, which will beillustrated with reference to FIG. 3.

In addition, the controller 170 can control the overall operation of theimage display apparatus 100. For example, the controller 170 can controlthe tuner 110 to tune to an RF broadcast corresponding to auser-selected channel or a pre-stored channel. Further, the controller170 can control the image display apparatus 100 by a user command inputvia the user input interface 150 or an internal program. For example,the controller 170 can control the display 180 to display an image suchas a still image or a video, or a 2D or 3D image.

The controller 170 can control a predetermined 2D object in the imagedisplayed on the display 180 to be generated and displayed as a 3Dobject. For example, the object may be at least one of an accessed webscreen (newspaper, journal, etc.), an Electronic Program Guide (EPG),various menus, a widget, an icon, a still image, a video, and text.

The controller 170 can recognize a user's location based on an imagecaptured by a capturing unit. For example, the controller 170 canrecognize a distance (z-axial coordinates) between the user and theimage display apparatus 100. Also, the controller 170 can recognizex-axial coordinates and y-axial coordinates in the display 180corresponding to the user's location.

In addition, the image display apparatus 100 may further include achannel browsing processor which generates a thumbnail imagecorresponding to a channel signal or an external input signal. Thechannel browsing processor can receive a stream signal (TS) output fromthe demodulator 120 or a stream signal output from the external deviceinterface 130, extract an image from the input stream signal, andgenerate a thumbnail image. The generated thumbnail image can be decodedinto a stream form to be input to the controller 170 together with thedecoded image. The controller 170 can display, on the rollable display180, a thumbnail list including a plurality of thumbnail images usingthe input thumbnail images.

The thumbnail list can be displayed in a brief viewing manner in whichthe list is displayed in a portion of a display area while apredetermined image is displayed on the display 180, or in a fullviewing manner in which the list is displayed in a full area. Thethumbnail images in the thumbnail list may also be updated sequentially.

Further, the driving unit 175 may include a roller, on which therollable display 180 is rolled, and a motor which rotates the roller.The rollable display 180 may be unrolled upward or may be rolleddownward by the driving unit 175. The display 180 can also generate adriving signal by converting a video signal, a data signal, an OSDsignal, and a control signal processed by the controller, or a videosignal, a data signal, and a control signal received via the externaldevice interface 130.

In addition, the display 180 includes an OLED panel which may beflexible or rollable. The display 180 may also be implemented as a touchscreen to be used as an input device as well as an output device.Further, the audio output unit 185 can output sound by receiving anaudio signal processed by the controller 170 and may include a speakerunit 185 a as described above.

The capturing unit captures a user's image. The capturing unit may beimplemented with a single camera, but is not limited thereto, and may beimplemented with a plurality of cameras. The capturing unit may also beembedded in the image display apparatus 100 at the upper side of thedisplay 180, or may be provided separately. The image informationcaptured by the capturing unit can also be input to the controller 170.

Further, the controller 170 can also sense a user's gesture based on theimage captured by the capturing unit, a signal sensed by the sensorunit, or a combination thereof. Also, the power supply 190 can supplypower throughout the image display apparatus 100. Particularly, thepower supply 190 can supply power to the controller 170 which may beimplemented in a form of a system on chip (SOC), the display 180 todisplay an image, and the audio output unit 185 to output an audio.Specifically, the power supply 190 may include a converter whichconverts an alternating current into a direct current, and a dc/dcconverter which converts the level of the direct current.

In addition, the remote controller 200 transmits a user input to theuser input interface 150. Thus, the remote controller 200 may usevarious communication techniques, such as Bluetooth, RF communication,IR communication, Ultra Wideband (UWB), ZigBee, and the like. Further,the remote controller 200 can receive a video, audio, or data signaloutput from the user input interface 150, to display the signal on theremote controller 200 or output the signal thereon in the form of sound.The above-described image display apparatus 100 may also be a fixed ormobile digital broadcast receiver capable of receiving digitalbroadcast.

Further, the block diagram of the image display apparatus 100illustrated in FIG. 2 is only by example. Depending upon thespecifications of the image display apparatus 100 in actualimplementation, the components of the image display apparatus 100 may becombined or omitted or new components may be added. That is, two or morecomponents may be incorporated into one component or one component maybe configured as separate components, as needed. In addition, thefunction of each block is described for the purpose of describing theembodiment of the invention and thus specific operations or devicesshould not be construed as limiting the scope and spirit of theinvention.

Unlike FIG. 2, the image display apparatus 100 may not include the tuner110 and the demodulator 120 illustrated in FIG. 2, and may receivebroadcast content via the network interface 135 or the external deviceinterface 130, and play back the broadcast content. The image displayapparatus 100 is also an example of an image signal processor whichprocesses signals of an image stored in the apparatus or an input image.Another example of the image signal processor includes a set-top box,from which the display 180 and the audio output unit 185 are excluded, aDVD player, a Blu-ray player, a game console, a computer, and the likeas described above.

Next, FIG. 3 is an internal block diagram of the controller 170 of FIG.2. Referring to FIG. 3, the controller 170 according to an embodiment ofthe present invention includes a demultiplexer 310, a video processor320, a processor 330, an OSD generator 340, a mixer 345, a frame rateconverter 350, a formatter 360, and an audio processor 370. In addition,the processor 170 may further include an audio processor 370 and a dataprocessor.

The demultiplexer 310 demultiplexes an input stream. For example, thedemultiplexer 310 can demultiplex an MPEG-2 TS into a video signal, anaudio signal, and a data signal. The stream signal input to thedemultiplexer 310 may be a stream signal output from the tuner 110, thedemodulator 120, or the external device interface 130.

The video processor 320 can process the demultiplexed video signal.Thus, the video processor 320 may include a video decoder 225 and ascaler 235. The video processor 225 decodes the demultiplexed videosignal, and the scaler 235 scales resolution of the decoded video signalso that the video signal can be displayed on the display 180. The videodecoder 225 may also include decoders of various standards.

Further, the processor 330 can control the overall operation of theimage display apparatus 100 or the controller 170. For example, theprocessor 330 controls the tuner 110 to tune to an RF signalcorresponding to a channel selected by the user or a previously storedchannel. The processor 330 can control the image display apparatus 100by a user command input through the user input interface 150 or aninternal program.

Further, the processor 330 can control data transmission of the networkinterface 135 or the external device interface 130. In addition, theprocessor 330 can control the operation of the demultiplexer 310, thevideo processor 320, the OSD generator 340 of the controller 170.

The OSD generator 340 generates an OSD signal autonomously or accordingto user input. For example, the OSD generator 340 can generate signalsby which various types of information are displayed as graphics or texton the display 180 according to a user input signal. The generated OSDsignal may include various data such as a User Interface (UI), variousmenus, widgets, icons, etc.

The OSD generator 340 can generate a pointer which can be displayed onthe display according to a pointing signal received from the remotecontroller 200. Particularly, such pointer may be generated by apointing signal processor and the OSD generator 340 may include suchpointing signal processor. Alternatively, the pointing signal processormay be provided separately from the OSD generator 340 without beingincluded therein.

In addition, the mixer 345 can mix the OSD signal generated by the OSDgenerator 340 and the decoded video signal processed by the videoprocessor 320. The frame rate converter (FRC) 350 can convert a framerate of an input video and output the input video as it is withoutconverting the frame rate.

The formatter 360 can convert the format of an input video signal into avideo signal suitable for the display 180. For example, the formatter360 can convert the format into the low voltage differential signaling(LVDS) or mini-LVDS. In addition, the audio processor 370 in thecontroller 170 can process the demultiplexed audio signal, or an audiosignal of a predetermined content. Thus, the audio processor 370 mayinclude various decoders. Further, the audio processor 370 may alsoadjust the bass, treble, or volume of the audio signal.

A data processor in the controller 170 can process the demultiplexeddata signal. For example, when the demultiplexed data signal is encoded,the data processor can decode the encoded demultiplexed data signal.Here, the encoded data signal may be Electronic Program Guide (EPG)information including broadcast information such as the start time andend time of a broadcast program which is broadcast through each channel.

The block diagram of the controller 170 illustrated in FIG. 3 is byexample. The components of the block diagrams may be integrated oromitted, or a new component may be added according to the specificationsof the controller 170. Particularly, the frame rate converter 350 andthe formatter 360 may not be included in the controller 170 but may beprovided individually, or may be provided separately as one module.

Next, FIG. 4 is a diagram illustrating a method of controlling theremote controller 200 of FIG. 2. As illustrated in (a) of FIG. 4, apointer 205 corresponding to the remote controller 200 is displayed onthe display 180. A user can move or turn the remote controller 200vertically and horizontally ((b) of FIG. 4), and back and forth ((c) ofFIG. 4). As shown, the pointer 205 displayed on the display 180 of theimage display apparatus moves corresponding to the motion of the remotecontroller 200. As illustrated in FIG. 4, since the pointer 205 movesaccording to the motion of the remote controller 200 in a 3D space, theremote controller 200 may be referred to as a space remote controller or3D pointing device.

As illustrated in (b) of FIG. 4, when a user moves the remote controller200 to the left, the pointer 205 displayed in the display 180 of theimage display apparatus also moves to the left corresponding to themovement. Information on the motion of the remote controller 200, whichis sensed by a sensor thereof, is transmitted to the image displayapparatus. The image display apparatus can calculate coordinates of thepointer 205 based on the information on the motion of the remotecontroller 200. The image display apparatus can display the pointer 205to correspond to the calculated coordinates thereof.

As illustrated in (c) of FIG. 4, while pressing a specific button of theremote controller 200, a user can move the remote controller 200 awayfrom the display 180. In this manner, a selected area of the display 180corresponding to the pointer 205 is zoomed in and enlarged. By contrast,when the user moves the remote controller 200 toward the display 180,the selected area of the display 180 corresponding to the pointer 205 iszoomed out and reduced in size. Further, when the remote controller 200moves away from the display 180, the selected area may be zoomed out,whereas when the remote controller 200 moves toward the display 180, theselected area may be zoomed in.

Alternatively, while a specific button of the remote controller 200 ispressed, the horizontal and vertical movement of the remote controller200 may not be recognized. That is, when the remote controller 200 movesaway or toward the display 180, the vertical or horizontal movement isnot recognized, and only the back and forth movement is recognized. Whenthe specific button of the remote controller 200 is not pressed, onlythe pointer 205 is moved according to the up and down and left and rightmovement of the remote controller 200. The moving speed or movingdirection of the pointer 205 may correspond to the moving speed ormoving direction of the remote controller 200.

Next, FIG. 5 is an internal block diagram of a remote controller of FIG.2. Referring to FIG. 5, the remote controller 200 includes a wirelesscommunication unit 1425, a user input unit 1435, a sensor unit 1440, anoutput unit 1450, a power supply 1460, a memory 1470, and a controller1480. The wireless communication unit 1425 transmits and receivessignals to and from any one of the image display apparatuses accordingto the above-described embodiments of the present invention. Descriptionbelow will be made based on any one of the image display apparatuses 100according to the embodiments of the present invention.

In the embodiment, the remote controller 200 may include an RF module1421 for transmitting and receiving signals to and from the imagedisplay apparatus 100 according to the RF communication standards.Further, the remote controller 200 may include an IF module 1423 fortransmitting and receiving signals to and from the image displayapparatus 100 according to the IR communication standards.

In the embodiment, the remote controller 200 can transmit signals,including information on movement and the like of the remote controller200, to the image display apparatus 100 through the RF module 1421.Further, the remote controller 200 can receive signals, transmitted bythe image display apparatus 100, through the RF module 1421. Also, ifnecessary, the remote controller 200 can transmit commands, includingpower on/off, channel change, volume change, and the like, to the imagedisplay apparatus 100 through the IR module 1423.

The user input unit 1435 may be composed of a keypad, a button, a touchpad, a touch screen, and the like. A user can operate the user inputunit 1435 to input commands related to the image display apparatus 100to the remote control apparatus 200. When the user input unit 1435includes a hard key button, a user can input commands related to theimage display apparatus 100 to the remote controller 200 by pushing thehard key button. When the user input unit 1435 includes a touch screen,the user can input commands related to the image display apparatus 100to the remote control apparatus 200 by touching a soft key of the touchscreen. Further, the user input unit 1435 may include various types ofinput units, such as a scroll key, a jog key, and the like, which may bemanipulated by a user, but the present invention is not limited to thisembodiment.

In addition, the sensor unit 1440 may include a gyro sensor 1441 or anacceleration sensor 1443. The gyro sensor 1441 can sense information onmovement of the remote controller 200. For example, the gyro sensor 1441can sense information on the operation of the remote control apparatus200 based on x, y, and z axes. The acceleration sensor 1443 can senseinformation on a moving speed and the like of the remote controller 200.Moreover, the sensor unit 1440 may further include a distancemeasurement sensor to sense a distance with respect to the display 180.

Further, the output unit 1450 can output video or audio signalscorresponding to the manipulation of the user input unit 1435 or tosignals transmitted by the image display apparatus 100. A user canrecognize, through the output unit 1450, whether the user input unit1435 is manipulated or the image display apparatus 100 is controlled.

For example, in order to indicate when the user input unit 1435 ismanipulated or a signal is transmitted and received with the imagedisplay apparatus 100 through the wireless communication unit 1425, theoutput unit 1450 may include an LED module 1451 which flashes, avibration module 1453 which generates vibration, a sound output module1455 which outputs sound, or a display 280 which outputs an image.

Also, the power supply 1460 supplies power to the remote controller 200.When the remote controller 200 does not move for a predetermined periodof time, the power supply 1460 stops supplying power to reduce waste ofpower. The power supply 1460 may resume power supply when apredetermined key provided for the remote controller 200 is manipulated.

In addition, the memory 1470 may store various types of programs,application data, and the like, which are necessary to control oroperate the remote control apparatus 200. When the remote controlapparatus 200 transmits and receives signals wirelessly through theimage display apparatus 100 and the RF module 1421, the remotecontroller 20 and the image display apparatus 100 transmit and receivesignals through a predetermined frequency band. The controller 1480 ofthe remote controller 200 can store information related to a frequencyband and the like in the memory 1470 for wirelessly transmitting andreceiving signals with the image display apparatus 100 which is pairedwith the remote controller 200, and may refer to the stored information.

The controller 1480 controls the general operation related to thecontrol of the remote controller 200. The controller 1480 can alsotransmit a signal corresponding to a predetermined key manipulation ofthe user input unit 1435, or a signal corresponding to movement of theremote controller 200 which is sensed by the sensor unit 1440, to theimage display apparatus 100 through the wireless communication unit1425.

In addition, the user input interface unit 150 of the image displayapparatus 100 may include a wireless communication unit 151 which canwirelessly transmit and receive signals with the remote controller 200,and a coordinate value calculator 1415 which can calculate coordinatesof a pointer corresponding to the operation of the remote controller200. The user input interface 150 can also wirelessly transmit andreceive signals with the remote controller 200 through the RF module1421. Further, the remote controller 200 can receive signals,transmitted through the IR communication standards, through the IRmodule 1413.

The coordinate value calculator 1415 can calculate coordinate values (xand y) of the pointer 205 to be displayed on the display 180 bycorrecting hand trembling or an error based on a signal corresponding tothe motion of the remote controller 200 which is received through thewireless communication unit 151. A signal, which is transmitted from theremote controller 200 and is input to the image display apparatus 100,is transmitted to the controller 170 of the image display apparatus 100through the user input interface 150. Based on the signal transmittedfrom the remote controller 200, the controller 170 identifiesinformation on the motion and key manipulation of the remote controller200, and can control the image display apparatus 100 based on theinformation.

In another example, the remote controller 200 can calculate coordinatevalues of the pointer corresponding to the motion, and can output thecalculated coordinate values to the user input interface 150 of theimage display apparatus 100. In this instance, the user input interface150 of the image display apparatus 100 can transmit information on thereceived coordinate values of the pointer to the controller 170 withoutseparately correcting hand trembling or an error. Further, in yetanother example, unlike FIG. 5, the coordinate value calculator 1415 maybe included in the controller 170, rather than in the user inputinterface 150.

Next, FIG. 6 is a flowchart illustrating a method of operating an imagedisplay apparatus including a rollable display according to anembodiment of the present invention, and FIGS. 7A to 15C are diagramsreferred to in explaining the operation method of FIG. 6. Referring toFIG. 6, when a power key and the like of the remote controller 200operate in S610, the remote controller 200 can transmit a power-on inputto the image display apparatus 100.

When the power key and the like of the remote controller 200 operate,such that the remote controller 200 receives the power-on input (Yes inS610), an image display input is transmitted to the image displayapparatus 100 in S620. Then, the controller 170 of the image displayapparatus 100 receives the image display input through the user inputinterface 150 in S622.

In addition, the controller 170 of the image display apparatus 100 canchange the size of a display in S625 according to the image displayinput. Specifically, the controller 170 of the image display apparatus100 can control the driving unit 175 to unroll the display 180 upward.

The controller 170 of the image display apparatus 100 can also controlvideo information, which is to be displayed while changing the size ofthe display 180, to be transmitted to the remote controller 200 in S630.Then, the remote controller 200 can receive the video information to bedisplayed in S632.

Subsequently, based on the received video information, the controller1480 of the remote controller 200 can control a first video,corresponding to the video to be displayed on the display of the imagedisplay apparatus 100, to be displayed on a display 280 in S635. Thus,the image can be displayed in advance on the remote controller 200 whilethe display 180 is unrolled upward.

Next, once the size of the display 180 is completely changed in S640,the controller 170 of the image display apparatus 100 can control thevideo to be displayed on the display 180 in S645, which is fullyunrolled. Then, the controller 170 of the image display apparatus 100can control the video information to be displayed not to be transmittedto the remote controller 200 any longer. Thus, a user can view aseamless image through the display 180.

According to the power-on input described above, the image displayapparatus 100 and the remote controller 200 can be paired bytransmitting and receiving a pairing signal and a pairing responsesignal. After pairing is complete, the controller 170 of the imagedisplay apparatus 100 can receive the image display input, or cantransmit information of a video to be displayed.

In response to receiving the image display input after the pairing iscomplete, the control unit 170 of the image display apparatus 100process a video signal of the video to be displayed, and can controlinformation on the signal-processed video to be transmitted to theremote controller 200 by mirroring while the size of the display ischanged, particularly while the display 180 is unrolled upward.

The controller 170 of the image display apparatus 100 can also terminatemirroring when the display 180 is fully unrolled. Accordingly, thecontroller 170 of the image display apparatus 100 can control theinformation of the video to be displayed not to be transmitted to theremote controller 200 any more after the display 180 is fully unrolled.

FIG. 7A illustrates an example where an image display input istransmitted from the remote controller 200 to the image displayapparatus 100 by an operation of a predetermined key and the like of theremote controller 200. Further, FIG. 7A illustrates an example where therollable display 180 is rolled into the signal processor 300 so as notto be exposed to the outside of the opening 15.

Once the remote controller 200 transmits the image display input, thecontrol unit 170 of the image display apparatus 100 can receive theimage display input through the user input interface 150. Thepredetermined key for the image display input may correspond to a powerkey, an external input key, and the like.

For example, when the power key of the remote controller 200 operates, apower-on input can be transmitted to the image display apparatus 100.The controller 170 of the image display apparatus 100 can control abroadcast video to be displayed according to the power-on input. Thatis, the power-on input by the operation of the power key may correspondto a broadcast video display input. In another example, when an externalinput key of the remote controller 200 operates, an external inputdisplay input can be transmitted to the image display apparatus 100. Thecontroller 170 of the image display apparatus 100 can then control theexternal input video to be displayed according to the external inputdisplay input.

Next, FIG. 7B illustrates an example where the rollable display 180 isunrolled upward according to the image display input. In particular, thecontroller 170 of the image display apparatus 100 can control therollable display 180 to be unrolled upward according to the receivedimage display input as illustrated in FIG. 7B, in which the rollabledisplay 180 is at a height ha.

In addition, the controller 170 of the image display apparatus 100 cancontrol any image not to be displayed on the rollable display 180 whilethe rollable display 180 is unrolled upward. Further, the controller 170of the image display apparatus 100 can display a first video,corresponding to the video to be displayed on the display 180, to bedisplayed on the display 280 of the remote controller 200.

That is, once the rollable display 180 is fully unrolled, the controller170 of the image display apparatus 100 can control video information,corresponding to the video to be displayed, to be transmitted throughthe user input interface 150 as illustrated in FIG. 7B, so that thefirst video, corresponding to the video to be displayed, can bedisplayed on the display 280 of the remote controller 200.

The remote controller 200 can receive video information through thecommunication unit 1420, and can display the first video 710 on thedisplay 280 corresponding to the received video information. Thus, theimage can be displayed in advance on the remote controller 200 while therollable display 180 is unrolled upward, and a user can convenientlycheck a video to be viewed through the remote controller 200.

Further, the controller 170 of the image display apparatus 100 canoutput sounds Sa and Sb for the first video 710 through the audio outputunit 185. Specifically, the sounds Sa and Sb for the first video 710 canbe output through the speaker unit 185 a of the signal processor 300.The controller 170 of the image display apparatus 100 can also controlthe playback sync information to be transmitted to the remote controller200, so that display of the first video 710 and output of the sound forthe first video 710 is synchronized and performed at the display 380 ofthe remote controller 200 and the speaker unit 185 a of the signalprocessor 300 respectively.

Accordingly, the display 280 of the remote controller 200 and thespeaker unit 185 a of the signal processor 300 can synchronize the firstvideo 710 and the sounds Sa and Sb for the first video 710 based on theplayback sync information, and can output the synchronized image andsounds.

FIG. 7C is similar to FIG. 7B, except that the rollable display 180 isat a height hb which is higher than the height ha. Referring to FIG. 7C,the controller 170 of the image display apparatus 100 can control anyimage not be displayed on the rollable display 180 since the rollabledisplay 180 is being unrolled upward, control the first video 710 to bedisplayed on the display 280 of the remote controller 200, and controlthe sounds Sa and Sb for the first video 710 to be output through theaudio output unit 185.

FIG. 7D illustrates an example where the rollable display 180 is fullyunrolled, and the display 180 is at a height hc which is a first height.When the rollable display 180 is fully unrolled, such that the height ofthe display 180 is the first height hc, the controller 170 of the imagedisplay apparatus 100 can control the display 180 to display a video 720to be displayed.

Thus, once the display 180 is fully unrolled, and the height of thedisplay 180 is the first height hc, the video to be displayed isdisplayed on the display 180, thereby enabling a user to seamlessly viewthe video 720 on the display 180 following the first video 710 displayedon the display 280 of the remote controller 200, which increases user'sconvenience.

Once the rollable display 180 is fully unrolled, the controller 170 ofthe image display apparatus 100 can control the first video not to bedisplayed on the display 280 of the remote controller 200. That is, thecontroller 170 of the image display apparatus 100 can control the videoinformation not to be transmitted to the remote controller 200 anylonger.

Once the rollable display 180 is fully unrolled, the control unit 170 ofthe image display apparatus 100 can control information related to thevideo displayed on the display 180 to be transmitted to the remotecontroller 200. Thus, the remote controller 200 can display information747 related to the video displayed on the display 180 as illustrated inFIG. 7D. Here, the information 747 related to the video displayed on thedisplay 180 may correspond to title information, content information,and the like.

FIGS. 8A to 8D are similar to FIGS. 7A to 7D, except that while thedisplay 180 is unrolled upward, the first video is displayed on thedisplay 280 of the remote controller 200, and a sound corresponding tothe first video is output through the sound output module 1455 of theremote controller 200. FIG. 8A illustrates an example where an imagedisplay input is transmitted from the remote controller 200 to thesignal processor 300 of the image display apparatus 100, which is thesame as FIG. 7A.

Similarly to FIG. 7B, FIG. 8B illustrates an example where the rollabledisplay 180 is unrolled upward according to the image display input. Asshown, the controller 170 of the image display apparatus 100 can controlany image not to be displayed on the rollable display 180 while therollable display 180 is unrolled upward.

While the rollable display 180 is unrolled upward, the controller 170 ofthe image display apparatus 100 can control a first video, correspondingto the video to be displayed on the display 180, to be displayed on thedisplay 280 of the remote controller 200. Further, while the rollabledisplay 180 is unrolled upward, the controller 170 of the image displayapparatus 100 can control sounds Saa and Sba for the first video 710 tobe output through the sound output module 1455.

Thus, the controller 170 of the image display apparatus 100 can controlvideo information and audio information to be transmitted to the remotecontroller 200. Thus, the remote controller 200 can display the firstvideo 710 on the display 280 while outputting the sounds Saa and Sba forthe first video 710 through the sound output module 1455.

FIG. 8C illustrates an example where the rollable display 180 is at aheight hb which is higher than the height ha. Also, FIG. 8D illustratesan example where the rollable display 180 is fully unrolled, and theheight of the display 180 is the height hc which is the first height.Once the display 180 is fully unrolled, and the height of the display180 is the first height hc, the controller 170 of the image displayapparatus 100 can control the video 720 to be displayed to be displayedon the display 180, and can output a sound Sca for the video to beoutput through the audio output unit 185.

Thus, once the display 180 is fully unrolled, and the height of thedisplay 180 is the first height hc, the video to be displayed isdisplayed on the display 180, and the sound Sca is output through theaudio output unit 185, thereby enabling a user to seamlessly view thevideo 720 on the display 180 and hear the sound Sca, which increasesuser convenience.

Once the rollable display 180 is fully unrolled, the controller 170 ofthe image display apparatus 100 can control the first video not to bedisplayed on the display 280 of the remote controller 200, and cancontrol the sound for the video not to be output. That is, thecontroller 170 of the image display apparatus 100 can control the videoinformation and the audio information not to be transmitted to theremote controller 200 any longer.

While the display 180 is unrolled upward, the controller 170 of theimage display apparatus 100 can control the first video and a channellist to be displayed on the display 280 of the remote controller 200,which will be described with reference to FIGS. 9A to 9D.

In particular, FIGS. 9A to 9D are similar to FIGS. 7A and 7D, such thatdescription below will be made based on differences therebetween. FIG.9A illustrates an example where an image display input is transmittedfrom the remote controller 200 to the signal processor 300 of the imagedisplay apparatus 100, which is the same as FIG. 7A.

Similarly to FIG. 7B, FIG. 9B illustrates an example where the rollabledisplay 180 is unrolled upward according to the image display input.While the rollable display 180 is unrolled upward, the controller 170 ofthe image display apparatus 100 can control any image not to bedisplayed on the rollable display 180.

While the rollable display 180 is unrolled upward, the controller 170 ofthe image display apparatus 100 can control a first video 912,corresponding to the video to be displayed on the display 180, and athumbnail list 916 including a plurality of thumbnail images 913, 915,and 917, to be displayed on the display 280 of the remote controller200.

Thus, the controller 170 of the image display apparatus 100 can controlvideo information CMa on the first video, and information CMb on thethumbnail list 916 to be transmitted to the remote controller 200.Accordingly, the remote controller 200 can display the first video 912,and the thumbnail list 916 including the plurality of thumbnail images913, 915, and 917 on the display 280.

While the rollable display 180 is unrolled upward, the controller 170 ofthe image display apparatus 100 can control the video information CMa onthe first video, corresponding to the video to be displayed on thedisplay 180, to be transmitted to the remote controller 200 by using afirst communication method, and information CMb on the thumbnail list916 to be transmitted to the remote controller 200 by using a secondcommunication method.

For example, the first communication method may be a Miracastcommunication scheme, and the second communication method may be aBluetooth or Wi-Fi communication scheme. Thus, by transmitting the videoinformation CMa on the first video and the information CMb on thethumbnail list 916 by using different communication schemes, eachinformation can be transmitted in a stable manner. Particularly, thevideo information CMa on the first video, which is a large amount ofinformation, can be transmitted stably to the remote controller 200.

Unlike the drawings, the video information CMa on the first video mayalso be transmitted from the image display apparatus 100 to the remotecontroller 200 by mirroring, and the information CMb on the thumbnaillist 916 may also be received through an external server and the like,instead of the image display apparatus 100. In this instance, the remotecontroller 200 can stably receive the video information CMa on the firstvideo, which is a large amount of information.

FIG. 9C illustrates an example where the rollable display 180 is at theheight hb which is higher than the height ha. When the first thumbnailimage 913 is selected from among the plurality of thumbnail images 913,915, and 917, the remote controller 200 can transmit information on thefirst thumbnail image 913 to the image display apparatus 100.

Accordingly, the controller 170 of the image display apparatus 100 canreceive information on the first thumbnail image 913, and when thedisplay 180 is unrolled upward to reach the first height hc, thecontroller 170 of the image display apparatus 100 can control the firstvideo 912 not to be displayed on the display 180, and the video 920corresponding to the first thumbnail image 913 to be displayed on thedisplay 180 as illustrated in FIG. 9D. The thumbnail list described withreference to FIGS. 9A to 9D may be a broadcast channel list.

As illustrated in FIG. 9B, while the rollable display 180 is unrolledupward, the control unit 170 of the image display apparatus 100 cancontrol the first video 912, corresponding to the video to be displayedon the display 180, and a channel list to be displayed on the display280 of the remote controller 200.

When any one channel is selected from the channel list as illustrated inFIG. 9C, the controller 170 of the image display apparatus 100 cancontrol a video, corresponding to the first video 912, not to bedisplayed on the display 180, and a broadcast video 920, correspondingto the selected channel, to be displayed on the display 180 asillustrated FIG. 9D. Thus, while the rollable display is unrolledupward, a channel desired by a user can be selected, and when thedisplay is fully unrolled, and a broadcast video corresponding to theselected channel can be displayed, thereby increasing user convenience.

As illustrated in FIG. 9D, when the rollable display 180 is fullyunrolled, the controller 170 of the image display apparatus 100 cancontrol the pointer 205 to be displayed based on a pointing signalreceived from the remote controller 200. As illustrated in FIG. 9D, whenthe rollable display 180 is fully unrolled, the controller 170 of theimage display apparatus 100 can control the first video not to bedisplayed on the display 280 of the remote controller 200, and cantransmit video related information to the remote controller 200, so thatthe information on the image 920, which is displayed on the display 180instead, can be displayed. Thus, the remote controller 200 can displaythe video related information 921 and the channel list together on thedisplay 280 as illustrated in FIG. 9D.

FIG. 9E is a diagram illustrating a signal flow for transmission ofvideo information CMa on the first video between the signal processor300 and the remote controller 200. First, by operating a predeterminedkey of the remote controller 200, the remote controller 200 can transmita pairing signal Spa to the signal processor 300 of the image displayapparatus 100. Thus, the signal processor 200 of the image displayapparatus 100 can transmit a pairing response signal Srp to the remotecontroller 200, thereby completing pairing for mirroring.

Then, the remote controller 200 can transmit, to the signal processor300 of the image display apparatus 100, information on an area where thefirst video is to be displayed, information Scap on resolution that canbe displayed, and the like. Based on the information on an area wherethe first video is to be displayed, and the information Scap onresolution that can be displayed, the signal processor 300 of the imagedisplay apparatus 100 can process a signal, such as resolution of thefirst video to be transmitted, and the like.

Further, the signal processor 300 of the image display apparatus 100 cantransmit, to the remote controller 200, parameter information or setupinformation on the first video to be transmitted. Then, the signalprocessor 300 of the image processing apparatus 100 can transmit, to theremote controller 200, information on the first video to be displayed bya Miracast communication scheme using a streaming method such asreal-time streaming protocol (RTSP). Accordingly, the remote controller200 can display the first video at a determined position of the display280 with a determined resolution.

Further, while the display 180 is unrolled upward, the controller 170 ofthe image display apparatus 100 can control an application list,including a plurality of application items, to be displayed on thedisplay 280 of the remote controller 200, which will be described withreference to FIGS. 10A to 10D.

FIGS. 10A to 10D are similar to FIGS. 7A to 7D, such that descriptionbelow will be made based on differences therebetween. In particular,FIG. 10A illustrates an example where an image display input istransmitted from the remote controller 200 to the signal processor 300of the image display apparatus 100, which is the same as FIG. 7A. Forexample, the image display input may be a home screen display input. Thehome screen may include a broadcast video and an application listincluding a plurality of application items.

Similarly to FIG. 7B, FIG. 10B illustrates an example where the rollabledisplay 180 is unrolled upward according to the image display input.While the rollable display 180 is unrolled upward, the controller 170 ofthe image display apparatus 100 can control any image not to bedisplayed on the rollable display 180. Further, while the rollabledisplay 180 is unrolled upward, the controller 170 of the image displayapparatus 100 can control the application list 1000 including theplurality of application items 1005 to be displayed on the display 280of the remote controller 200.

Thus, the controller 170 of the image display apparatus 100 can transmitinformation on the application list, including the plurality ofapplication items, to the remote controller 200. Thus, the remotecontroller 200 can display the application list 1000, including theplurality of application items 1005, to be displayed on the display 280.In addition to the plurality of application items 1005, the applicationlist 1000 may further include a first video 1002 corresponding to avideo to be displayed.

FIG. 10B illustrates an example where the application list 1000,including the plurality of application items 1005 and the first video1002, is displayed on the display 280 of the remote controller 200. Inaddition, FIG. 10C illustrates an example where the rollable display 180is at the height hb which is higher than the height ha.

When a first application item 1009 in the application list 1000 isselected, the remote controller 200 can transmit information on thefirst application item 1009 to the image display apparatus 100. Thus,the controller 170 of the image display apparatus 100 receivesinformation on the first application item 1009, and when the display 180is unrolled upward to reach the first height hc, the controller 170 ofthe image display apparatus 100 can control the first video 1002 not tobe displayed on the display 180, and an application screen 1020corresponding to the first application item 1009 to be displayed thereonas illustrated in FIG. 10D.

Thus, while the rollable display is unrolled upward, an application itemdesired by a user can be selected, and when the rollable display isfully unrolled, the application screen 1020 corresponding to theapplication item can be displayed, thus improving user convenience.While the display 180 is unrolled upward, the controller 170 of theimage display apparatus 100 can control a broadcast video to bedisplayed on the display 280 of the remote controller 200, and cancontrol the application list including the plurality of applicationitems to be displayed on the display 180, which will be described withreference to FIGS. 11A to 11D.

Next, FIGS. 11A to 11D are similar to FIGS. 7A to 7D, such thatdescription below will be made based on differences therebetween. Inparticular, FIG. 11A illustrates an example where an image display inputis transmitted from the remote controller 200 to the signal processor300 of the image display apparatus 100, which is the same as FIG. 7A.

For example, the image display input may be a home screen display input.The home screen may include a broadcast video and an application listincluding a plurality of application items. Similarly to FIG. 7B, FIG.11B illustrates an example where the rollable display 180 is unrolledupward according to the image display input.

While the rollable display 180 is unrolled upward, the controller 170 ofthe image display apparatus 100 can control an application list 1100including a plurality of application items 1005 to be displayed thereon.The application list 1100 including the plurality of application itemsis a pre-stored content which can be displayed immediately while therollable display 180 is unrolled upward.

The controller 170 of the image display apparatus 100 can control afirst video 1112, which corresponds to a video to be displayed on thedisplay 180, to be displayed on the display 280 of the remote controller200. Thus, the controller 170 of the image display apparatus 100 cancontrol information on the video to be displayed to be transmitted tothe remote controller 200. Thus, the remote controller 200 can displaythe first video 1112, corresponding to the video to be displayed on thedisplay 180, to be displayed on the display 280.

FIG. 11C illustrates an example where the rollable display 180 is at theheight hb which is higher than the height ha. In this instance, theapplication list 1100 is scaled up, such that the scaled up applicationlist 1100 b is displayed on the display 180, and the first video 1112 isdisplayed on the display 280 of the remote controller 200.

When the height of the display 180 is the first height hc, the homescreen 1120 can be displayed on the display 180 as illustrated in FIG.11D. The home screen 1120 may include a broadcast video 1122 which is avideo to be displayed, and an application list 1100 which includes aplurality of application items.

When the display 180 is unrolled upward such that the height thereof isthe first height hc, the controller 170 of the image display apparatus100 can control the first video not to be displayed on the display 280.That is, the controller 170 of the image display apparatus 100 may nottransmit video information to the remote controller 200.

When the display 180 is unrolled upward such that the height thereof isthe first height hc, the controller 170 of the image display apparatus100 can control a pointer 205 to be displayed on the broadcast video1122 or the application list 1100 based on a pointing signal received bythe remote controller 200 as illustrated in FIG. 11D, thereby enabling auser to simply select a desired item.

While the display 180 is unrolled upward, when the height of the display180 is a second height ha which is lower than the first height hc, thecontroller 170 of the image display apparatus 100 can control the firstvideo to be displayed on the display 280 of the remote controller 200,and when the height of the display 180 is a third height hb which ishigher than the second height ha, the controller 170 of the imagedisplay apparatus 100 can control the first video and the thumbnail listincluding a plurality of thumbnail images to be displayed on the display280 of the remote controller 200.

Further, when the display 180 is unrolled upward such that the heightthereof is the first height hc, the controller 170 of the image displayapparatus 100 can control the display 180 to display a video to bedisplayed, and can control only the thumbnail list to be displayed onthe display 280 of the remote controller 200, which will be describedwith reference to FIGS. 12A to 12H.

Among FIGS. 12A to 12H, FIGS. 12A to 12D are similar to FIGS. 7A to 7D,such that description below will be made based on differencestherebetween. FIG. 12A illustrates an example where an image displayinput is transmitted from the remote controller 200 to the signalprocessor 300 of the image display apparatus 100, which is the same asFIG. 7A.

Similarly to FIG. 7B, FIG. 12B illustrates an example where the rollabledisplay 180 is unrolled upward according to the image display input.While the rollable display 180 is unrolled upward, the controller 170 ofthe image display apparatus 100 can control any image not to bedisplayed on the rollable display 180. Further, while the rollabledisplay 180 is unrolled upward, the controller 170 of the image displayapparatus 100 can control a first video 1210, corresponding to a videoto be displayed, to be displayed on the display 280 of the remotecontroller 200. Thus, the controller 170 of the image display apparatus100 can control information on the video to be displayed to betransmitted to the remote controller 200.

In addition, the remote controller 200 can display the first video 1210on the display 280. While the rollable display 180 is unrolled upward,the controller 170 of the image display apparatus 100 can control moreamounts of information or videos to be displayed on the remotecontroller 200 in proportion to the size, particularly to the height, ofthe rollable display 180.

Next, FIG. 12C illustrates an example where the rollable display 180 isat the height hb which is higher than the height ha. In this instance,the controller 170 of the image display apparatus 100 can control afirst video 1210 b and a thumbnail list 1230 b including a plurality ofthumbnail images to be displayed on the display 280 of the remotecontroller 200.

FIG. 12C illustrates an example where the remote controller 200 is ahorizontal mode, however, even in a vertical mode, the first video 1210b and the thumbnail list 1230 b including a plurality of thumbnailimages can be displayed on the display 280 of the remote controller 200.Then, when the rollable display 180 is fully unrolled such that theheight of the rollable display 180 is the first height hc, thecontroller 170 of the image display apparatus 100 can control thedisplay 180 to display a video 1122 to be displayed as illustrated inFIG. 12D.

In this instance, the controller 170 of the image display apparatus 100can control the first video not to be displayed on the display 280, andcan control only the thumbnail list 1230 including a plurality ofthumbnail images to be displayed as it is. Thus, after the rollabledisplay 180 is fully unrolled, a user can check or select apredetermined thumbnail item in the thumbnail list 1230 displayed on theremote controller 200 while viewing the video 1122, such that userconvenience may be improved.

When the first video 1210 b is a broadcast video, the thumbnail list1230 b illustrated in FIGS. 12C and 12D may be a thumbnail listincluding thumbnail images of a channel different from a channel of thefirst video 1210 b. When the played first video 1210 b is a Video onDemand (VOD), the thumbnail list 1230 b illustrated in FIGS. 12C and 12Dmay be a thumbnail list including thumbnail images in each time intervalof the first video 1210 b.

When any one thumbnail image is selected from the thumbnail listincluding thumbnail images in each time interval of the first video 1210b, the controller 1480 of the remote controller 200 can control a video,corresponding to the selected thumbnail image, to be displayed on thedisplay 280, which will be described with reference to FIGS. 12E to 12H.

FIG. 12E illustrates an example where a first thumbnail image 1232 isselected from the thumbnail list 1230 including thumbnail images in eachtime interval. When the first thumbnail image 1232 is selected from thethumbnail list 1230, the controller 1480 of the remote controller 200can control an image preview item 1233 to be displayed as illustrated inFIG. 12E.

FIG. 12F illustrates an example where the image preview item 1233 isselected. In this instance, the controller 1480 of the remote controller200 can control an enlarged image 1232 b of the first thumbnail image1232 to be displayed as illustrated in FIG. 12G.

FIG. 12H illustrates an example where the enlarged image 1232 b of thefirst thumbnail image 1232 is selected. In this instance, the controller1480 of the remote controller 200 can transmit a playback input of theenlarged image 1232 b to the image display apparatus 100.

Accordingly, the control unit 170 of the image display apparatus 100 cancontrol a video 1237, corresponding to the enlarged image 1232 b, to beplayed and displayed on the display 180. Thus, a user can convenientlyselect a video of a desired point in time, and may view the video of thedesired point in time on the display 180 of the image display apparatus100.

In FIGS. 12E to 12H, a video and the like displayed on the display 280of the remote controller 200 may be a video transmitted from the imagedisplay apparatus 100 by mirroring. Further in FIGS. 12E to 12H, eachcontrol operation of the controller 1480 of the remote controller 200may be performed by the controller 170 of the image display apparatus100. For example, when the first thumbnail image 1232 is selected fromthe thumbnail list 1230, the remote controller 200 can transmit theselected information to the image display apparatus 100, and thecontroller 170 of the image display apparatus 100 can control the imagepreview item 1233 to be displayed on the display 280 of the remotecontroller 200 as illustrated in FIG. 12F.

In another example, when the image preview item 1233 is selected whilethe image preview item 1233 is displayed on the display 280 of theremote controller 200, the remote controller 200 can transmit theselected information to the image display apparatus 100, and thecontroller 170 of the image display apparatus 100 can control theenlarged image 1232 b to be displayed on the display 280 of the remotecontroller 200 as illustrated in FIG. 12F.

When the enlarged image 1232 b is selected while the enlarged image 1232b is displayed on the display 280 of the remote controller 200, theremote controller 200 can transmit the selected information to the imagedisplay apparatus 100, and the controller 170 of the image displayapparatus 100 can control a video 1237, corresponding to the enlargedimage 1232 b, to be displayed on the display 180 as illustrated in FIG.12H.

During the upward unrolling of the display 180, the controller 170 ofthe image display apparatus 100 can control recommended contentinformation or preferred content information to be displayed on thedisplay 280 of the remote controller 200, and after any one of therecommended content information or the preferred content information isselected, when the display 180 is unrolled upward such that the heightthereof reaches the first height hc, the controller 170 of the imagedisplay apparatus 100 can control a video corresponding to the selectedcontent to be displayed on the display 180, which will be described withreference to FIG. 13A to 15C.

FIG. 13A illustrates an example where an image display input istransmitted from the remote controller 200 to the signal processor 300of the image display apparatus 100, which is the same as FIG. 7A. Inthis instance, a predetermined video 1310 can be displayed on thedisplay 280 of the remote controller 200.

FIG. 13B illustrates an example where according to a user's input, ascreen 1320 including recommended content information or the preferredcontent information is displayed on the display 280 of the remotecontroller 200. When the recommended content information 13220 isselected from the screen 1320 including the recommended contentinformation or the preferred content information, the remote controller200 can transmit the recommended content information to the imagedisplay apparatus 100.

Then, after any one of the recommended content information or thepreferred content information is selected, when the display 180 isunrolled upward such that the height thereof reaches the first heighthc, the controller 170 of the image display apparatus 100 can control avideo 1330, corresponding to the selected content, to be displayed onthe display 180 as illustrated in FIG. 13C.

When displaying the video 1330 corresponding to the selected content,the controller 170 of the image display apparatus 100 can control videorelated information 1340 to be displayed on the display 280 of theremote controller 200. Accordingly, a user can check the relatedinformation through the remote controller 200 while viewing the video1330.

FIG. 14A illustrates an example where an image display input istransmitted from the remote controller 200 to the signal processor 300of the image display apparatus 100, which is the same as FIG. 7A. Inthis instance, a predetermined video 1310 can be displayed on thedisplay 280 of the remote controller 200.

FIG. 14B illustrates an example where according to a user's input, ascreen 1420 including a broadcast video or a broadcast video information1422 is displayed on the display 280 of the remote controller 200. Whenthe broadcast video is selected from the screen 1420 including thebroadcast video or the broadcast video information 1422, the remotecontroller 200 can transmit broadcast video information to the imagedisplay apparatus 100.

Then, after the broadcast video is selected, when the display 180 isunrolled upward such that the height thereof reaches the first heighthc, the controller 170 of the image display apparatus 100 can controlthe selected broadcast video 1430 to be displayed on the display 180 asillustrated in FIG. 14C.

When displaying the selected broadcast video 1430, the controller 170 ofthe image display apparatus 100 can control a menu 1440, including achannel control item and a volume control item, to be displayed on thedisplay 280 of the remote controller 200. Thus, a user can check an itemrequired for remote control through the remote controller 200 whileviewing the broadcast video 1430.

FIG. 15A illustrates an example where an image display input istransmitted from the remote controller 200 to the signal processor 300of the image display apparatus 100, which is the same as FIG. 7A. Inthis instance, a predetermined video 1310 can be displayed on thedisplay 280 of the remote controller 200.

FIG. 15B illustrates an example where according to a user's input, ascreen 1520 recommended music information or the preferred musicinformation is displayed on the display 280 of the remote controller200. When any one 1522 of the recommended music information or thepreferred music information is selected, the remote controller 200 cantransmit the selected music information to the image display apparatus100.

Then, after the broadcast video is selected, when the display 180 isunrolled upward such that the height thereof reaches the first heightha, the controller 170 of the image display apparatus 100 can controlthe selected preferred music information 1522 to be displayed on thedisplay 180 as illustrated in FIG. 15C. When displaying the selectedpreferred music information 1522, the controller 170 of the imagedisplay apparatus 100 can output sounds Sa and Sb corresponding to therecommended music information.

Unlike FIG. 15C, the selected recommended music information 1522 can bedisplayed on the display 180, and the sounds corresponding to therecommended music information can be output on the remote controller200. When displaying the selected recommended music information 1522 onthe display 180 of the image display apparatus 100, the controller 170of the image display apparatus 100 can control a menu 1540, including amusic play/pause control item and a volume control item, to be displayedon the display 280 of the remote controller 200.

Thus, a user can check a playback related menu 1540 through the remotecontroller 200 while viewing the selected recommended music information1522, for example information on lyrics and the like, on the display180. Accordingly, user convenience may be improved. The first heightdescribed with reference to FIGS. 1 to 15C may change depending on thetypes of contents to be displayed, and thus the height of the display180 when being fully unrolled may change accordingly. For example, theheight of the display 180 may be the lowest when music is played.

The remote controller 200 described with reference to FIGS. 1 to 15C maybe a remote controller for remote control of the image display apparatus100, but is not limited thereto, and may include a mobile terminal suchas a smartphone. That is, when an application for remote control of theimage display apparatus 100 is executed in a mobile terminal, the mobileterminal may correspond to the remote controller 200 illustrated inFIGS. 1 to 15C.

As is apparent from the above description, according to an embodiment ofthe present invention, there is provided an image display apparatusincluding a rollable display, a driving unit to change a size of therollable display, an interface to receive a signal from a remotecontroller, and a controller to control the rollable display, whereinbased on an image display input, the controller controls the drivingunit to unroll the rollable display, and during the unrolling, thecontroller controls a first video, corresponding to a video to bedisplayed on the rollable display, to be displayed on a display of theremote controller. Accordingly, a video can be displayed in advance on aremote controller while a rollable display is unrolled upward.

Once the rollable display is fully unrolled, such that the rollabledisplay is at the first height, the video to be displayed is displayedon the rollable display, thereby enabling a user to view the imageseamlessly through the rollable display. Further, the controllercontrols the first video and a channel list to be displayed on thedisplay of the remote controller, and after any one channel is selectedfrom the channel list displayed on the display of the remote controller,and the display is unrolled upward such that the height of the displayreaches the first height, the controller controls a broadcast video,corresponding to the selected channel, to be displayed on the displayinstead of the video to be displayed, thereby enabling a user to viewthe desired broadcast video immediately after the display is fullyunrolled, and improving user convenience.

In addition, the controller controls an application list including aplurality of application items to be displayed on the display of theremote controller during the upward unrolling, such that a user canselect a desired item immediately during the upward unrolling, thusimproving user convenience. Moreover, during the unrolling, thecontroller controls more videos to be display on the display of theremote controller in time-sequential order, thereby enabling a user tocheck more information, and improving user convenience.

Further, during the unrolling, the controller controls recommendedcontent information or preferred content information to be display onthe display of the remote controller, and after any one of recommendedcontent information or preferred content information, when the rollabledisplay is unrolled upward such that the height of the rollable displayreaches the first height, the controller controls a video, correspondingto the selected content, to be displayed on the display, therebyenabling a user to view the desired content video immediately after thedisplay is fully unrolled, and improving user convenience.

According to another embodiment of the present invention, there isprovided an image display apparatus including a rollable display, adriving unit to change a size of the rollable display, an interface toreceive a signal from a remote controller, and a controller to controlthe rollable display, wherein based on an image display input, thecontroller controls the driving unit to unroll the rollable display, andduring the unrolling, the controller controls a video not to bedisplayed on the display, and controls a first video, corresponding to avideo to be displayed on the display, to be displayed on the display ofthe remote controller. Accordingly, a video can be displayed in advanceon a remote controller while a rollable display is unrolled upward.

The image display apparatus according to the embodiments of the presentinvention are not limited to the configurations and methods of the abovedescribed embodiments, and all or some of the embodiments may beselectively combined to achieve various modifications. Further, in thepresent specification, although the preferred embodiments of the presentinvention have been shown and described, the present invention is notlimited to the above-described specific embodiments, those skilled inthe art will appreciate that various modifications are possible in theart, without departing from the gist of the invention as disclosed inthe accompanying claims, and such modifications should not be understoodseparately from the technical spirit or scope of the present invention.

What is claimed is:
 1. An image display apparatus, comprising: an audiooutput unit; a rollable display; a driving unit configured to change asize of the rollable display; an interface configured to receive asignal from a mobile terminal; and a controller configured to: inresponse to connection with the mobile terminal, control the drivingunit to unroll the rollable display, wherein, when the rollable displayis unrolled such that a height of the rollable display reaches a firstheight, the controller displays a broadcast video on the rollabledisplay, and controls a menu, including a channel control item and avolume control item, to be displayed on the display of the mobileterminal.
 2. The image display apparatus of claim 1, wherein thecontroller is configured to: output sound, corresponding to thebroadcast video displayed on the unrolled display through the audiooutput unit of the image display apparatus, or control sound,corresponding to the broadcast video displayed on the unrolled display,to be output through a sound output module of the mobile terminal. 3.The image display apparatus of claim 2, wherein the controller isconfigured to control the broadcast video to be displayed on a displayof mobile terminal during the unrolling of the rollable display.
 4. Theimage display apparatus of claim 3, wherein the interface transmitsvideo information to the mobile terminal so that the broadcast video isdisplayed on the display of the mobile terminal during the unrolling ofthe rollable display.
 5. The image display apparatus of claim 3, whereinwhen the rollable display is unrolled such that the height of therollable display is the first height, the controller displays thebroadcast video on the rollable display, and controls the sound,corresponding to the broadcast video, to be output through the audiooutput unit.
 6. The image display apparatus of claim 5, wherein when therollable display is unrolled such that the height of the rollabledisplay is the first height, the controller controls the broadcast videonot to be displayed on the display of the mobile terminal, and controlsthe sound, corresponding to the broadcast video, not to be outputthrough the sound output module of the mobile terminal.
 7. The imagedisplay apparatus of claim 3, wherein after any one channel is selectedfrom the channel list displayed on the display of the mobile terminal,and when the rollable display is unrolled such that the height of therollable display reaches the first height, the controller displays arespective broadcast video, corresponding to the selected channel, onthe rollable display.
 8. The image display apparatus of claim 2, whereinafter any one of recommended content information or preferred contentinformation, which are displayed on the display of the mobile terminal,is selected, and when the rollable display is unrolled such that aheight of the rollable display reaches a first height, the controllerdisplays a video, corresponding to the selected content, on the rollabledisplay.
 9. The image display apparatus of claim 8, wherein in responseto the selected content being a music content, and after any one of therecommended content information or the preferred content information isselected and the rollable display is fully unrolled, the controllerdisplays information on the music content on the rollable display. 10.The image display apparatus of claim 1, wherein the controller controlsthe drive unit to unroll the rollable display from a rolled position inwhich the rollable display is rolled within a casing so as not to beexposed outside the casing.
 11. The image display apparatus of claim 1,wherein: during the unrolling of the rollable display, and when theheight of the rollable display is a second height which is lower thanthe first height, the controller controls the broadcast video to bedisplayed on the display of the mobile terminal; and during theunrolling of the rollable display, and when the height of the rollabledisplay is a third height which is higher than the second height, thecontroller controls the broadcast video and a thumbnail list including aplurality of thumbnail images to be displayed on the display of themobile terminal.
 12. The image display apparatus of claim 11, whereinwhen the rollable display is unrolled such that the height of therollable display reaches the first height, the controller displays thevideo on the rollable display, and controls only the thumbnail list tobe displayed on the display of the mobile terminal.
 13. The imagedisplay apparatus of claim 1, wherein the drive unit is included in acasing and comprises: a roller on which the rollable display is wound;and a motor to rotate the roller, and wherein the controller controlsthe drive unit to roll the rollable display on the roller via the motorsuch that the rollable display is not exposed outside of the casing in astandby mode.
 14. An image display apparatus, comprising: an audiooutput unit; a rollable display; a driving unit configured to change asize of the rollable display; an interface configured to receive asignal from a mobile terminal; and a controller configured to: inresponse to connection with the mobile terminal, control the drivingunit to unroll the rollable display, wherein the controller controls anapplication list including a plurality of application items to bedisplayed on a display of the mobile terminal during the unrolling ofthe rollable display.
 15. The image display apparatus of claim 14,wherein after a first application item is selected from the applicationlist displayed on the display of the mobile terminal, and when therollable display is unrolled such that a height of the rollable displayreaches a first height, the controller displays an application screen,corresponding to the selected first application item, on the rollabledisplay instead of the video to be displayed.
 16. An image displayapparatus, comprising: an audio output unit; a rollable display; adriving unit configured to change a size of the rollable display; aninterface configured to receive a signal from a mobile terminal; and acontroller configured to: in response to connection with the mobileterminal, control the driving unit to unroll the rollable display,wherein during the unrolling of the rollable display, the controllercontrols a broadcast video to be displayed on the display of the mobileterminal, and displays an application list including a plurality ofapplication items on the rollable display.
 17. The image displayapparatus of claim 16, wherein when the rollable display is unrolledsuch that a height of the rollable display reaches a first height, thecontroller displays the broadcast video and the application list on therollable display.
 18. The image display apparatus of claim 17, whereinbased on a pointing signal from the mobile terminal, the controllerdisplays a pointer on the broadcast video or the application list.